Gianluca Mager and Rei Sakamoto will square off in the quarter of the Nonthaburi 1 Challenger for the 1^st time in their career. They are scheduled to play on Thursday at 10:30 am on COURT B. In the following lines you can find the head to head analysis and prediction.

Prediction, odds and live streaming

The pick for Tennis Tonic is Rei Sakamoto who should win in 3 sets.

As per the initial odds, Rei Sakamoto is the pick to win this match.
Rei Sakamoto -> 1.56
Gianluca Mager -> 2.3

Click here to see the updated quotes and live streaming (only selected countries - USA excluded).

To be able to watch live streaming bet365, a funded account is required or you need to have placed a bet in the last 24 hours. 18+ BeGambleAware.

Here where top tennis events are broadcasted or streamed online (ATP, WTA).

At the challenger level, there will be free live streaming on Challenger TV.

 

Prediction and head to head Gianluca Mager vs. Rei Sakamoto

There is no head to head record between Gianluca Mager and Rei Sakamoto since this will be the first time that they will fight against each other in the main tour.

Gianluca Mager

Ranked no. 230, Gianluca reached the quarter after defeating Murphy Cassone 7-6(6) 2-6 6-3 and Titouan Droguet 6-4 3-6 6-3.

In the 2^nd round, The Italian defeated Droguet (6-4 3-6 6-3).During the match, Mager scored less points (5) than Droguet. In fact, the world no. 230 won 85 points vs Droguet’s. That means that Mager was more focused during the important points. Mager was pretty aggressive to blast 43 winners.

Regarding the service games, Mager recorded 7 aces and he committed only 4 double faults. Gianluca Mager lost the serve once and he saved 9 break points. Furthermore, Mager put 63% of his first serves in, winning 69% (43/62) of the points behind his 1st serve and 58% (21/36) on the 2nd serve. Gianluca broke Droguet twice after converting 33% of his break points (2/6).

Overall Performance in this tournament

Mager has conceded 2 set in this event to conquer 50% of the points he played.

Mager has positive record in the last 10 years having won 55% of his matches (288-231). 2-0 on hard in 2025. Regarding his performance on the same surface of this tournament, Mager has a composed 30-38 record in the last years on hard.

Mager has an aggregate 2-0 win-loss record in 2025, 2-0 on hard (See FULL STATS).

Previously in the Nonthaburi 1 Challenger

Rei Sakamoto

Ranked no. 413, the Japanese got to the quarter after beating Daniel Cukierman 3-6 6-3 6-4, Mitsuki Wei Kang Leong 6-2 6-3, Marat Sharipov 7-6(3) 2-6 6-4 and Clement Chidekh 6-3 6-0.

In the 2^nd round, Sakamoto had a good straight sets win against Chidekh (6-3 6-0). During the match Sakamoto scored 56 points vs Chidekh’s 29. Sakamoto was extremely aggressive to blast 21 winners.

Talking about serving, Sakamoto struck 7 aces and he was extremely steady in conceding no double faults for the entire match. Rei Sakamoto was quite effective on serve to win 81% (21/26) of his 1st serve and 63% (15/24) on the second serve. This was the main reason for not conceding a single break during the match. Sakamoto was clinical in his return game without wasting any break point and break Chidekh 4 times.

Overall Performance in this tournament

Sakamoto started his run at this tournament from the qualifications. In the main draw, he has conceded 2 set in the tournament to win 55% of the points he played.

The Japanese has a composed 4-0 win-loss record in 2025, 4-0 on hard (See FULL STATS).

H2H Performance in the tournament (main draw)

Matches, sets, games and points

Points	Mager	Sakamoto
Match played	2	4
Tot Set	6	10
Tot Games	58	91
Pts	182-185	304-253
Total Points	367	557
Winners	85	127
%Winners	47%	42%

Mager played 2 matches while Sakamoto competed in 4 matches. Sakamoto started his run from the qualifications while Mager had a direct access to the main draw. Both players lost a set in the event. Gianluca Mager surrendered 2 sets, while Rei Sakamoto dropped 2 sets. Mager has played 4 set(s) less than Sakamoto (6 vs 10). Therefore, Mager played 33 games less than Sakamoto. The Italian scored 85 winners (47% of the total points). On the other side, Sakamoto blasted 127 winners (42%).

Serve Performance

Serve	Mager	Sakamoto
Aces	16	47
Avg per match	8	11.8
1st in	118/199	164/284
%1st in	59%	58%
1st pts	85/118	127/164
%1st pts	72%	77%
2nd pts	45/81	62/120
%2nd pts	56%	52%

Mager bagged 16 aces (8 per match). Sakamoto recorded 47 aces (11.8 per match). Mager won 72% points on his first serve. He pretty effective on his second serve to win 56% of the points. On the other side, Sakamoto won 77% of the points on his first serve. He had a solid display on his second serve to win 52% of the points.

How they played the important points

Breaks	Mager	Sakamoto
Won	4	15
Converted	4/13	15/28
% Converted	31%	54%
Conceded	20	19
Saved	16	12
% Saved	80%	63%
Times Broken	4	7

Mager broke his opponents 4 times with a 31% conversion rate. The Italian dropped his serve 4 times and he saved 80% of the break points that he conceded. Sakamoto broke his opponents 15 times with a 54% conversion rate. Rei conceded his serve 7 times and he saved 63% of the break points that he conceded.

Mager
	R1 Cassone	R2 Droguet	Total
Score	7-66 2-6 6-3	6-4 3-6 6-3
Tot Set	3	3	6
Tot Games	30	28	58
pts	97-95	85-90	182-185
Total points	192	175	367
Winners	42	43	85
%Winners	43%	51%	47%
SERVE
Aces	9	7	16
Double Faults	3	4	7
1st in	56/101	62/98	118/199
% 1st in	55%	63%	59%
1st pts	42/56	43/62	85/118
% 1st pts	75%	69%	72%
2nd pts	24/45	21/36	45/81
% 2nd pts	53%	58%	56%
Breaks
Won	2	2	4
Converted	2/7	2/6	4/13
Converted %	29%	33%	31%
Conceded	10	10	20
Saved	7/10	9/10	16
Saved %	70%	90%	80%
Times Broken	3	1	4

Sakamoto
	Q1 Cukierman	Q3 Wei Kang Leong	R1 Sharipov	R2 Chidekh	Total
Score	3-6 6-3 6-4	6-2 6-3	7-63 2-6 6-4	6-3 6-0
Tot Set	3	2	3	2	10
Tot Games	28	17	31	15	91
pts	95-89	64-44	89-91	56-29	304-253
Total points	184	108	180	85	557
Winners	36	27	43	21	127
%Winners	38%	42%	48%	38%	42%
SERVE
Aces	16	11	13	7	47
Double Faults	1	1	2	0	4
1st in	45/87	36/58	57/89	26/50	164/284
% 1st in	52%	62%	64%	52%	58%
1st pts	36/45	27/36	43/57	21/26	127/164
% 1st pts	80%	75%	75%	81%	77%
2nd pts	21/42	11/22	15/32	15/24	62/120
% 2nd pts	50%	50%	47%	63%	52%
Breaks
Won	3	5	3	4	15
Converted	3/8	5/9	3/7	4/4	15/28
Converted %	38%	56%	43%	100%	54%
Conceded	5	3	9	2	19
Saved	3/5	2/3	5/9	2/2	12
Saved %	60%	67%	56%	100%	142%
Times Broken	2	1	4	0	7

Upcoming matches in the draw

• Khumoun SultanovSultanov – Gregoire BarrereBarrere (0-0) – H2H and prediction
• Enrico Dalla ValleDalla Valle – Aslan KaratsevKaratsev (0-0) – H2H and prediction